Device for securing tool heads on handles



May 29, 1945. A. E. HINDLE 2,377,150

DEVICE FOR SECURING TOOL HEADS ON HANDLES Filed 001;. 1, 1943 Six/0mm fllfredECHindZe,

Patented May 29, 1945 OFFICE DEVICE FOR SECURING ON HANDL [1 TOOL HEADSES Alfred E. Hindle, Wickenburg, Arll.

Application October 1, 1943 Serial No. 504,615

2 Claims. (Cl. 306-35) The object of my invention isto provide animproved device for securing a hammer or other tool head on a handle bymeans which will pre vent its coming off or working loose and which willleave no obstruction for catching in the clothing or other article whenthe tool is in use.

It is a special object of my invention to provide a device which willprevent the tool head from working loose under constant use and whichwill prevent any side motion or end motion of the head relative to thehandle.

It is also my object to provide a device which will hold the hammer orother tool head secure to the handle even where it is in use intemperatures of 130 to 135 degrees.

I attain the objects of my invention by the the device illustrated inthe accompanying drawing, in which- 2-4 of F18. 1;

Fig. 3 is a section taken longitudinally through the tool head andtransversely of the handle on line 33 of Figure 1;

Fig. 4 is a detail side elevation of the handle before the tool head isapplied;

Fig. 5 is a transverse section through the handle on line 5-5 of Fig. 4;and

Fig. 6 is a perspective view of one of the metal plates that secure thetool head to the handle.

Like numerals designate like parts ,in each of the several views.

Referring to the accompanying drawing l designates a tool head such as ahammer head shown which is mounted on the handle 2. The tool head i hasopposite recesses 3 in the end of the head. I provide oppositerectangular metal plates 4 each of which has a central slot Ii. Theplates 4 seat in correspondingly shaped recesses 8 in the opposite sidesof the handle. The wooden handle has rectangular wooden keys which areleft an integral part of the wood handle in the center of recess cut forthe metal plates to seat in the slots 5 of metal plates 4. said ends 8seating in the opposite recesses 3 of the end of the tool head.

' In applying the tool, the metal slotted plates 4 are fitted over thewooden keys which are an integral part of the wood handle, into therecesses 6 which surround the wooden key. Then the tool head i isapplied and then the projecting ends 8 of the metal plate are bentoutwardly, as shown in Fig. 2 to align evenly with the outer end of thetool head.

tangular slots 5 of the metal plates 4, side or end movement of the headis effectively prevented.

This tool head may be successfully used in temperatures of 130 to 135degrees without the tool head coming loose, as expansion and contraction are taken care of at all times.

The fibres of the wood in the main section of the handle are not brokennor deformed, which lendsstrength and long life to the handle andprevents injury due to flying tool heads. In order to secure necessarystrength and prevent shrinkage, the metal plates in width should bepreferably 60 per cent of the length of the eye in the tool head. Notethat metal plates are .installed to provide proper balance to the toolwhen in use, which is most important; and are installed on the sides ofthe eye of the tool head where width and strength are provided for metalplates, and by so doing overcome stress and strain on said metal plates.The residing force on a tool head is at right angles to the length ofthe tool and perpendicular to the plane of the face of the tool head. Inmy invention the force is still applied on solid wood. It does not throwany tension on any metal plates which might tend to flatten or'deformthem.

.What I claim is:

1. The combination of a handle for hammers, hatchets, sledges, axes, andlike tools, having recesses on opposite sides containing twolongitudinal wood keys which are left as integral parts of the woodhandle when the aforesaid recesses are cut, like oppositely disposedmetal plates fitting into the recesses, each plate containing alongitudinal slot to fit the wood keys of said handle, the metal plateshaving projecting ends bent into recesses in the tool head to lock thehead in place on the handle and prevent its becoming loose, and wherebythere are no projecting ends to catch into objects.

2. The combination of a tool handle having recesses on opposite sides ofthe enlarged head of the handle, the handle having opposite longitudinalkeys integral with the handle and surrounded by said recesses, metalplates shaped to seat in said recesses and having longitudinal slots toreceive the aforesaid keys of the handle, the metal plates havingprojecting ends, recesses in the end of the handle into which theaforesaid projecting ends of the metal plates may be bent and seated tolock the head from becoming loose and to prevent any projecting elementbeyond the end of the handle while securing the tool head to the handle.

ALFRED E. HINDLE.

